Shackle assembly



March 15,1921. 1,620,756

H. E. CURTIS SHACKLE ASSEMBLY Filed July 8. 1924 FIGURE 1 FIGURE 8INVENTOR ATTORNEY Patented Mar. 15, 1927.

UNITED STATES rrsu'r HENRY E. CURTIS, OF SAN JOSE, CALIFORNIA, ASSIGNOR0F ONE-HALF TO JOHN H. BETTS, OF LONG BEACH, CALIFORNIA.

SHACKLE Application filed July 8,

The springs on trucks, motor-basses and similar vehicles are subjectedto widely varying loads and, especially in the case of the motor-bus,designed to carry many passengers, this load is sometimes very unequallydistributed and the distribution is constantly changing. Any variationin load, of course, effects a variation in the spread of the springsupporting it, while unequal distribution of the load applies a twistingstress to the spring which materially shortens its useful life andnecessitates its constant supervision- It is one object of the presentinvention to provide a shackle assembly whereby proper provision is madefor any necessary variation in the spread of the spring, and wherein therocking or swaying of the vehicle body due to unequal distribution ofthe load there on or during the increase or decrease of a load thereon,is prevented from twisting the said spring.

It is another object of the invention to I provide a device of thecharacter indicated that will be simple in construction, economical tomanufacture, strong, durable, and of few parts, and highly efficient inits practical application.

In the drawing Figure 1 is an elevation of the device in position on avehicle frame.

Figure 2 is a view on line 22 of Figure 1.

Referring more particularly to the drawing, 1 indicates the shacklehousing carrying a plate 2 by means of which it is secured to the frame3 of the vehicle by rivets 4.

Housing 1 is provided at its lower end with two spaced opposing parts 5and 6, part 5 being reamed at 7, and part 6 being tapped at 8 so that abolt 9 may be inserted therein as shown, the bolt being arranged atright angles to the spring 10 as shown.

On bolt 9 is pivotally mounted a sleeve 11 which carries a portion 12 atright angles thereto as shown, this portion being reamed as at 13 toreceive a screw bolt 14: on which it pivots.

At 15 is shown a yoke having spaced ears 16-17, ear 16 being reamed at18 and ear 17 being tapped at 19 so that screw 14 may be insertedthrough 18 and screwed into ear 17 at 19.

Arranged at right angles to ears. 16-17 are upstanding arms 20-21arranged in spaced parallel relation to each other, the one being reamedand the other tapped as at 22 ASSEMBLY.

1924. Serial No. 72 1,5580.

and 23 respectivelyto receive screw bolt 2-4; on which spring 10 is hungas shown.

hen this device is mounted rigidly on the frame the normal action ofspring 10 under the rise and fall of frame 3 causes the sleeve 11 toswing on bolt 9 thereby permitting the.

desired free action of said spring.

If the frame 3 swings laterally for tical movement of its ends relativeto its central portion, and its eliiciency greatly enhanced and itseffective life materially pro longed.

It is to be understood, of course, that while I have herein shown anddescribed one specific embodiment of the invention, changes in form,construction and method of operation may be made within the scope of theappended claims.

I claim 1. The combination with a vehicle chassis, of a supportingelement mounted thereon, a sleeve pivotally mounted on said element atright angles to the longitudinal axis of said chassis, an upstandingyoke pivotally mounted on said sleeve to swing in parallel relation tothe longitudinal axis of said chassis, and a spring mounted on said yoketo lie in parallel relation to the longitudinal axis of said chassis.

2. A shackle assembly comprising a sup port adapted to be mounted upon avehicle chassis, a sleeve pivotally mounted thereon to lie in ahorizontal plane and at right angles to the longitudinal axis of saidchassis when so mounted, an upstanding yoke pivotally mounted on saidsleeve to swing at right angles thereto, and means for mounting a springon said yoke.

3. A shackle assembly comprising a support adapted to be mounted upon avehicle chassis, a bolt mounted in said support to lie at right anglesto thelongitudinal axis of the said chassis when the support is somounted, a sleeve revolubly mounted on said bolt and carrying anupstanding portion at right angles to said bolt, a second bolt revolublymounted in said upstanding portion of the sleeve, a yoke mounted on saidlast named bolt, and means for mounting a spring on said yoke to lie inparallel relation to said second bolt.

4. A shackle assembly comprising a support adapted to be mounted upon avehicle chassis, a bolt mounted in said support to lie at right anglesto the longitudinal ax's of said chassis when the support is so mounted,a sleeve revolubly mounted on said bolt and carrying an upstandingportion at right angles to said bolt, a second bolt revolubly mounted insaid upstanding portion of said sleeve, a yoke having depending andupstanding ears arranged at right angles to each other, the dependingears being adapted to engage said second named bolt, and means formounting a spring on the upstanding ears of said bolt.

5. A shackle assembly comprising a support adapted to be mounted upon avehicle chassis and carrying a pivot normally lying in a horizontalplane at right angles to the longitudimal axis of said chassis When thesupport is mounted thereon, a second pivot revolubly mounted on saidfirst pivot and positioned thereabove and at right angles thereto, anupstanding yoke revolubly mounted on said second named pivot, and meansfor mounting a spring on said yoke.

HENRY E. CURTIS.

